csse-uoft / owlready2

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Owlready2

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Owlready2 is a module for ontology-oriented programming in Python 3. It can manage ontologies and knwoledge graphs, and includes an optimized RDF/OWL quadstore.

Owlready2 can:

Owlready has been created by Jean-Baptiste Lamy at the LIMICS reseach lab. It is available under the GNU LGPL licence v3. If you use Owlready in scientific works, please cite the following article:

Lamy JB. Owlready: Ontology-oriented programming in Python with automatic classification and high level constructs for biomedical ontologies. <http://www.lesfleursdunormal.fr/_downloads/article_owlready_aim_2017.pdf>_ Artificial Intelligence In Medicine 2017;80:11-28

In case of troubles, questions or comments, please use this Forum/Mailing list: http://owlready.306.s1.nabble.com

What can I do with Owlready2?

Load an ontology from a local repository, or from Internet:

::

from owlready2 import * onto_path.append("/path/to/your/local/ontology/repository") onto = get_ontology("http://www.lesfleursdunormal.fr/static/_downloads/pizza_onto.owl") onto.load()

Create new classes in the ontology, possibly mixing OWL constructs and Python methods:

::

with onto: ... class NonVegetarianPizza(onto.Pizza): ... equivalent_to = [ ... onto.Pizza ... & ( onto.has_topping.some(onto.MeatTopping) ... | onto.has_topping.some(onto.FishTopping) ... ) ] ... def eat(self): print("Beurk! I'm vegetarian!")

Access ontology class, and create new instances / individuals:

::

onto.Pizza pizza_onto.Pizza test_pizza = onto.Pizza("test_pizza_owl_identifier") test_pizza.has_topping = [ onto.CheeseTopping(), ... onto.TomatoTopping(), ... onto.MeatTopping () ]

Export to RDF/XML file:

::

test_onto.save()

Perform reasoning, and classify instances and classes:

::

test_pizza.class onto.Pizza

Execute HermiT and reparent instances and classes

sync_reasoner()

test_pizza.class onto.NonVegetarianPizza test_pizza.eat() Beurk! I'm vegetarian !

Perform SPARQL queries:

::

list(default_world.sparql("""SELECT * { ?x a owl:Class . FILTER(ISIRI(?x)) }""")) [[pizza_onto.CheeseTopping], [pizza_onto.FishTopping], [pizza_onto.MeatTopping], [pizza_onto.Pizza], [pizza_onto.TomatoTopping], [pizza_onto.Topping], [pizza_onto.NonVegetarianPizza]]

Access to medical terminologies from UMLS:

::

from owlready2 import from owlready2.pymedtermino2.umls import default_world.set_backend(filename = "pym.sqlite3") import_umls("umls-2018AB-full.zip", terminologies = ["ICD10", "SNOMEDCT_US", "CUI"]) default_world.save()

PYM = get_ontology("http://PYM/").load() ICD10 = PYM["ICD10"] SNOMEDCT_US = PYM["SNOMEDCT_US"]

SNOMEDCT_US[186675001] SNOMEDCT_US["186675001"] # Viral pharyngoconjunctivitis

SNOMEDCT_US[186675001] >> ICD10 # Map to ICD10 Concepts([ ICD10["B30.9"] # Viral conjunctivitis, unspecified ])

For more documentation, look at the doc/ directories in the source.

Changelog

version 1 - 0.2


version 1 - 0.3


version 2 - 0.1


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version 2 - 0.36


Links

Owlready2 on BitBucket (Git development repository): https://bitbucket.org/jibalamy/owlready2

Owlready2 on PyPI (Python Package Index, stable release): https://pypi.python.org/pypi/Owlready2

Documentation: http://owlready2.readthedocs.io/

Forum/Mailing list: http://owlready.306.s1.nabble.com

Contact "Jiba" Jean-Baptiste Lamy:

::

<jean-baptiste.lamy @ univ-paris13 . fr> LIMICS Université Sorbonne Paris Nord, Sorbonne Université, INSERM Bureau 149 74 rue Marcel Cachin 93017 BOBIGNY FRANCE